Nettie Lonesome jumped off a cliff, not knowing what she'd become. She's still not sure, but the destiny of the Shadow is calling her to help someone she'd just as soon watch die. Her new sidekick, an annoying shifter named Earl, is hellbent on finding the Rangers. He's just escaped a railroad camp where monsters are held captive, their very bones used to fuel the tracks scarring Nettie's wild, beloved Durango. And he wants revenge. Nettie, now facing the truth of her own identity and going by Rhett, must decide whether to side with her friends and the badge on her chest or take off alone on the dangerous mission pulling her inexplicably toward the fight of her life.

When it comes to monsters and men, the world isn't black and white. What good are two wings and a gun when your enemy can command a conspiracy of ravens?